Feasibility study of wave analysis for delamination detection of thick laminated composite beams

Wahyu Lestari; Pizhong Qiao; Gangbing Song

doi:10.1117/12.482710

18 August 2003 Feasibility study of wave analysis for delamination detection of thick laminated composite beams

Wahyu Lestari, Pizhong Qiao, Gangbing Song

Proceedings Volume 5057, Smart Structures and Materials 2003: Smart Systems and Nondestructive Evaluation for Civil Infrastructures; (2003) https://doi.org/10.1117/12.482710
Event: Smart Structures and Materials, 2003, San Diego, California, United States

Abstract

Fiber reinforced polymer (FRP) composites have been increasingly used for civil infrastructure in recent years, and the applications have promoted interest in health monitoring of structural composites. Although primary layouts of these composite structures are similar, the FRP composites used in civil engineering structures are usually relatively thicker and larger in size. Hence, more power authority is needed in the experimental procedure for health monitoring purposes. In this study, health monitoring of thick composite structures using smart piezoelectric materials is presented. Monitoring technique based on wave propagation is evaluated for possible damage detection in civil composite structures. For comparison purposes, the composite laminated beams with two different thickness are made of E-glass fiber and epoxy resins by vacuum bagging process, and the damage in the form of delamination is created by inserting Teflon sheet between the lamina at certain location. Smart piezoelectric materials are used as both the emitter and receiver of the wave. The exploratory experimental program developed in this study can be used for better understanding of the possibility of wave propagation based technique in health monitoring and damage detection of large civil FRP composite structures.

Citation Download Citation

Wahyu Lestari, Pizhong Qiao, and Gangbing Song "Feasibility study of wave analysis for delamination detection of thick laminated composite beams", Proc. SPIE 5057, Smart Structures and Materials 2003: Smart Systems and Nondestructive Evaluation for Civil Infrastructures, (18 August 2003); https://doi.org/10.1117/12.482710

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